P4 LED module has a 4mm pixel pitch, with common specifications including a 320x160mm module size (80x40 dots) or 256x128mm size (64x32 dots), a pixel density of 62,500 dots/m², and a refresh rate of ≥1920Hz to 3840Hz. Other key specs often include a brightness of ≥5000 cd/m² for outdoor use or ~1000 cd/m² for indoor use, a wide viewing angle of 160° horizontal and 140° vertical, and a contrast ratio of 5000:1.
